2933.59.70.00/Proxyphylline Pharmaceutical Grade/Mexico

Proxyphylline Pharmaceutical Grade from Mexico

Proxyphylline, a hydroxyethyltheophylline with pyrimidine rings, serves as a mild bronchodilator. Covered under HTS 2933.59.70.00 for its aromatic pyrimidine structure in additional U.S. note 3. Supplied for API manufacturing.

Duty Rate — Mexico → United States

6.5%

Rate breakdown

9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
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Import Tips

• Declare as 'bulk drug substance' not finished product

• Include synthetic route summary confirming heterocyclic identity

• Monitor EU REACH compliance for transatlantic shipments

Proxyphylline Pharmaceutical Grade from Mexico — Import Duty Rate | HTS 2933.59.70.00